# NTSB SEA94LA177: Day Teeny II, N526AD, Colville, WA, July 11, 1994

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: July 10, 1994, 20:25 local (Jul 11, 1994, 03:25 UTC)
- Place: Colville, WA
- Coordinates: 48.66917, -117.749191 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=48.6692&lon=-117.7492&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report April 25, 1995
- Report: Approved by Office Director
- NTSB case key (mKey): 41973
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA94LA177
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41973/pdf
- Page: https://openairdocs.org/ntsb/SEA94LA177

## Probable cause

THE PILOT'S FAILURE TO MAINTAIN ALTITUDE SUFFICIENT TO CLEAR TERRAIN. THE DOWNDRAFT WAS A FACTOR.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with terrain/water, maneuvering
  - altitude - inadequate, pilot in command (cause)
  - weather condition - downdraft (contributing factor)

## Analysis

AFTER MAKING A LOW PASS OVER THE HOUSE OF A FRIEND, THE PILOT TURNED TOWARD RISING TERRAIN. AS HE TRIED TO OUTCLIMB THE TERRAIN, THE AIRCRAFT ENCOUNTERED A DOWNDRAFT AND IMPACTED THE GROUND.

## Factual narrative

On July 10, 1994, approximately 2025 Pacific daylight time (PDT), an experimental Day Teeny II, N526AD, collided with the terrain while maneuvering near Colville, Washington. The private pilot, who was the sole occupant, received serious injuries, and the aircraft sustained substantial damage. The personal pleasure flight, which departed Sand Canyon Airport, Chewelah, Washington, about 15 minutes prior to the accident, was operating in visual meteorological conditions. No flight plan had been filed, and there was no report of an ELT activation.

According to the pilot, he made a low pass over the home of a friend, and then turned toward rising terrain. As he tried to outclimb the terrain, the aircraft encountered a downdraft, lost altitude, and impacted the ground.

The pilot said that there was no problem with the engine, and that it ran fine until impact.

## Aircraft

- Registration: [N526AD](https://openairdocs.org/deregistered/N526AD-1994-08-30), registration cancelled 1994-08-30, S/N 151743 (OpenAirDocs)
- Reported make and model: DAY TEENY II
- Registry model: [Day Alvin F TEENIE TWO](https://openairdocs.org/model/day-alvin-f-teenie-two) (registry code 05634AC) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 15-1743
- Airframe hours: 25
- Engines: Volkswagen 1600-H0647117 55 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Day, Alvin F.
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Continuous airworthiness, July 8, 1994, 2 hours before
- Departed: 1S9, CHEWELAH, WA
- Destination: 1S9, WA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 71; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 600 total, 25 in this make and model

## Weather

- Conditions: Visual (VMC), Dusk
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 81 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19940710017949A](https://openairdocs.org/incident/19940710017949A), Jul 10, 1994: Amtrpk TEENIE2, Colville, WA, Substantial damage. Made low pass over friends home. Turned toward rising terrain. Encountered downdraft. Impacted ground.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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